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Data transmission method, device and system

A data transmission method and data technology, applied in the field of communication, can solve problems such as bandwidth waste

Active Publication Date: 2014-08-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a data transmission method, device, and system, which realize uplink OFDMA data transmission in compatibility mode, and solve the problem of bandwidth waste caused by historical stock site data transmission

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  • Data transmission method, device and system
  • Data transmission method, device and system
  • Data transmission method, device and system

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Experimental program
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Embodiment approach

[0127] As another implementable manner, the access point sends a CTS frame containing scheduling indication information of the newly added station to the historical stock station and the newly added station on the channel including the main channel, so that the historical stock station Send data on the channel including the main channel and make the new station send data on the secondary channel not occupied by the historical stock station according to the CTS frame. In this implementation mode, compared with the previous implementation mode, the newly added station only needs to listen to the data sent by the main channel, which is more conducive to saving power and is simpler to implement.

[0128] In this embodiment, after the historical stock station successfully sends out the RTS frame on the channel including the main channel through competition, when the AP replies the CTS frame to the historical stock station, it uses the reserved bit or the repeatable bit in the CTS fr...

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Abstract

The embodiments of the present invention provide a data transmission method, device and system. The method comprises: receiving an RTS frame sent by a historical stock station over a channel containing a primary channel, and sending an indication frame to the historical stock station and a newly added station, so as to enable the historical stock station to send data over the channel containing the primary channel according to the indication frame and enable the newly added station to send the data over a secondary channel which is not occupied by the historical stock station according to the indication frame. According to the data transmission method, device and system provided in the embodiments of the present invention, the transmission of uplink OFDMA data in a compatible mode is achieved, and the problem of bandwidth waste caused when the historical stock station transmits data is solved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a data transmission method, device and system. Background technique [0002] In the process of wireless local area network (Wireless local access network, WLAN for short) standard evolution, an important feature is backward compatibility, that is, new access points (Access Point, hereinafter referred to as AP) and stations (STA) can use The old format is used for transmission, and the old STA can communicate normally under the new AP. During the evolution of the WLAN standard of the Orthogonal Frequency Division Multiple Access (orthogonal frequency division multiplexing, OFDM for short) system, the bandwidth gradually increases. The original IEEE802.11a used a bandwidth of 20MHz, and the bandwidth was extended to 40MHz in IEEE802.11n, and the bandwidth was further extended to 80MHz and 160MHz (80+80MHz) in IEEE802.11ac, and a larger bandwidth may also be u...

Claims

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Application Information

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IPC IPC(8): H04W74/08
CPCH04W74/08H04W74/006H04W84/12H04L5/0007H04W28/20H04W72/21
Inventor 李云波伍天宇罗毅
Owner HUAWEI TECH CO LTD